Mobile power supply with automobile emergency starting function and charge pal function

Abstract

The utility model is suitable for the technical field of power supplies, and provides a mobile power supply with both an automobile emergency starting function and a power bank function, which comprises a plurality of batteries, a series-parallel change-over switch assembly, an automobile starting power supply output port, a charging interface and a charging and discharging management circuit. According to the utility model, the series-parallel change-over switch assembly is used for switching the connection modes among the plurality of batteries, so that the plurality of batteries are switched to be connected in series when an automobile is in emergency power supply starting, and the aim of boosting and increasing current to start the automobile is fulfilled; and the power bank mode is switched to the parallel connection of the plurality of batteries, so that the utilization rate of the mobile power supply is improved to the maximum extent, the waste of resources is avoided, and the cost investment of a user is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supply, and in particular relates to a mobile power supply with both automobile emergency starting function and power bank function. Background Art

[0002] Drivers and vehicle rescue personnel usually carry an emergency starting power supply in their vehicles, and also carry a power bank to charge mobile phones and other mobile terminals.

[0003] Starting a vehicle generally requires a power supply of 12V, 100A-300A, but the voltage of a single battery cell cannot meet the requirements. Therefore, the usual practice of portable car emergency starting power supplies is to connect multiple high-rate batteries in series to boost the voltage to 12V or above. The capacity after series connection is still the same as the capacity of a single battery cell. For example, if three 4.2V4000mAh batteries are connected in series, the voltage rises to 12.6V, but the capacity is still 4000mAh. However, the car emergency starting power supply is a tool that is used very infrequently, which leads to a large amount of battery waste. At the same time, users need to buy an extra power bank, which not only seriously wastes resources but also increases the user's investment cost. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a mobile power source which has both the function of automobile emergency starting and the function of a power bank, so as to reduce the user's investment and save resources.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: a mobile power supply with both automobile emergency starting function and power bank function, including a housing, and also including:

[0006] Multiple batteries;

[0007] A series-parallel switching switch assembly is connected between the plurality of batteries and is used for controlled switching of the connection mode with the plurality of batteries so that the plurality of batteries are switched between forming a series structure and forming a parallel structure;

[0008] A car starting power output port, connected to the plurality of batteries, for outputting a voltage suitable for emergency starting of the car when the plurality of batteries form a series structure;

[0009] Charging interface, used to charge the mobile terminal;

[0010] The charge and discharge management circuit is connected to the multiple batteries and the charging interface, and is used to charge the mobile terminal using the electric energy of the multiple batteries when the multiple batteries form a parallel structure.

[0011] Furthermore, the series-parallel switching switch assembly comprises:

[0012] At least one first controlled switch is located between two adjacent batteries, with its fixed end connected to the positive electrode of the next battery, the first movable end connected to the positive electrode of the previous battery, and the second movable end connected to the negative electrode of the previous battery; at least one second controlled switch is located between two adjacent batteries, with its fixed end connected to the negative electrode of the next battery, the first movable end connected to the negative electrode of the previous battery, and the second movable end is idle; when each of the first controlled switches is controlled to have its fixed end connected to the first movable end, and each of the second controlled switches is controlled to have its fixed end connected to the first movable end, the multiple switches form a parallel structure; when each of the first controlled switches is controlled to have its fixed end connected to the second movable end, and each of the second controlled switches is controlled to have its fixed end connected to the second movable end, the multiple switches form a series structure.

[0013] Furthermore, the vehicle starting power output port and the charging interface are exposed on the surface of the shell.

[0014] Furthermore, the series-parallel switching switch assembly has a control button, which is used to control the switching of the connection mode between the series-parallel switching switch assembly and the multiple batteries; the control button is hidden inside the car starting power output port, and when the plug of the emergency starting power supply is inserted into the car starting power output port, the plug presses against the control button to switch the series-parallel switching switch assembly and the multiple batteries from the default parallel structure to the series structure.

[0015] Furthermore, the series-parallel switching switch assembly has a control button, and the control button is used to control the switching of the connection mode between the series-parallel switching switch assembly and the multiple batteries; the control button is exposed on the surface of the shell.

[0016] Furthermore, the mobile power supply also includes: a step-down circuit, connected between the multiple batteries and the charge and discharge management circuit, for stepping down the total voltage of the multiple batteries in series and providing it to the charge and discharge management circuit when the multiple batteries form a series structure, so that the charge and discharge management circuit can charge the mobile terminal based on the stepped-down electric energy.

[0017] Furthermore, the mobile power supply also includes: a resettable fuse connected between the multiple batteries and the charge and discharge management circuit, which is used to disconnect the line between the multiple batteries and the charge and discharge management circuit when the multiple batteries form a series structure, and self-recover when the multiple batteries form a parallel structure to form a path between the multiple batteries and the charge and discharge management circuit.

[0018] Furthermore, the mobile power supply further includes: an MCU connected to the charge and discharge management circuit and the step-down circuit, and used for controlling the operation of the charge and discharge management circuit and the step-down circuit.

[0019] Furthermore, the mobile power supply also includes a camping light, and the camping light includes a white light LED and a yellow light LED connected to the MCU.

[0020] Furthermore, the mobile power supply also includes: a mosquito repellent lamp connected to the MCU.

[0021] The mobile power supply provided by the utility model integrates a car emergency starting power supply and a power bank, and switches the connection mode between multiple batteries through a series-parallel switching switch component, so that the car emergency starting power supply is switched to multiple batteries in series, so as to achieve the purpose of boosting the voltage and increasing the current to start the car; and in the power bank mode, it switches to multiple batteries in parallel, thereby maximizing the utilization rate of the mobile power supply, thereby eliminating the waste of resources and reducing the cost investment of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the mobile power supply provided by the utility model that has both the car emergency starting function and the power bank function;

[0023] Figure 2 This is a module structure diagram of a mobile power supply with both car emergency starting function and power bank function provided by the utility model;

[0024] Figure 3 This is a circuit structure diagram between the series-parallel switching switch assembly and each battery provided by the utility model;

[0025] Figure 4 This is another module structure diagram of a mobile power supply provided by the utility model that has both the automobile emergency starting function and the power bank function. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] Reference Figure 1 , Figure 2 The mobile power supply provided by the utility model includes a housing 1, a plurality of batteries 11, a series-parallel switching switch assembly 12, a car starting power output port 13, a charging interface 14, and a charge and discharge management circuit 15.

[0028] Among them, multiple batteries 11, series-parallel switching switch components 12, and charge and discharge management circuits 15 are built into the shell 1, and the car starting power output port 13 and the charging interface 14 are exposed on the surface of the shell 1.

[0029] The multiple batteries 11 are rechargeable batteries of any type, and may be lithium battery type, polymer type, etc. The number of batteries 11 is not limited, and it is required to meet the requirement that when the multiple batteries 11 are connected in series, the total voltage can reach the emergency starting voltage of the vehicle.

[0030] The series-parallel switching switch assembly 12 is connected between the multiple batteries 11 and is used for controlled switching of the connection mode with the multiple batteries 11, so that the multiple batteries 11 switch between forming a series structure and forming a parallel structure. The series-parallel switching switch assembly 12 includes a plurality of single-pole multi-throw switches, each of which is controlled to be thrown at a different moving end, and each moving end is respectively connected to the positive or negative electrode of each battery 11. Therefore, the multiple batteries 11 can be made to present a series structure or a parallel structure by controlling the throwing state of each switch in the series-parallel switching switch assembly 12.

[0031] The vehicle starting power output port 13 is connected to a plurality of batteries 11 and is used to output a voltage suitable for emergency starting of the vehicle when the plurality of batteries 11 form a series structure.

[0032] The charging interface 14 is used to charge mobile terminals such as mobile phones, notebooks, tablet computers, cameras, wireless headphones, etc. The interface type is not limited, for example, it can include one or more interfaces such as Micro USB, type C, Lighting, etc.

[0033] The charge and discharge management circuit 15 is connected to the multiple batteries 11 and the charging interface 14, and is used to charge the mobile terminal using the power of the multiple batteries 11 when the multiple batteries 11 form a parallel structure. In addition, when the multiple batteries 11 form a series structure, the charge and discharge management circuit 15 can also use the power of the multiple batteries 11 to charge the mobile terminal. In this case, since the voltage after the series connection is high, it is necessary to step down the voltage before charging the mobile terminal.

[0034] Figure 3 The structural principle of the series-parallel switching switch assembly 12 is shown. Figure 3 In the figure, three batteries 11 (BATT1, BATT2, BATT3) are used as an example. Figure 3The series-parallel switch assembly 12 includes: at least one first controlled switch 121 and at least one second controlled switch 122. Both controlled switches are single-pole double-throw switches, having a first movable terminal a1, a second movable terminal a2 and a fixed terminal a3. When thrown to the first movable terminal a1, the fixed terminal a3 is connected to the first movable terminal a1, and when thrown to the second movable terminal a2, the fixed terminal a3 is connected to the second movable terminal a2. The connection relationship between the two controlled switches and the battery 11 is as follows:

[0035] At least one first controlled switch 121 is located between two adjacent batteries 11, with its fixed end a3 connected to the positive electrode of the next battery 11, the first movable end a1 connected to the positive electrode of the previous battery, and the second movable end a2 connected to the negative electrode of the previous battery 11;

[0036] At least one second controlled switch 122 is located between two adjacent batteries 11, with its fixed end a3 connected to the negative electrode of the next battery, the first movable end a1 connected to the negative electrode of the previous battery, and the second movable end a2 left unconnected.

[0037] Among them, "previous battery" and "next battery" are based on Figure 3 The batteries are arranged from right to left.

[0038] When each first controlled switch 121 is controlled so that the fixed end a3 is connected to the first movable end a1, and each second controlled switch 122 is controlled so that the fixed end a3 is connected to the first movable end a1, the plurality of switches 11 form a parallel structure;

[0039] When each first controlled switch 121 is controlled so that the fixed end a3 is connected to the second movable end a2, and each second controlled switch 122 is controlled so that the fixed end a3 is connected to the second movable end a2, the plurality of switches 11 form a series structure.

[0040] The series-parallel switching switch assembly 12 has a control button, which is used to control the connection mode between the series-parallel switching switch assembly 12 and the multiple batteries 11. Specifically, by operating the control button, the first controlled switch 121 and the second controlled switch 122 can be linked to the first moving end a1 or the second moving end a2. Considering that the frequency of use of the power bank function is much greater than the frequency of emergency start of the car, the first controlled switch 121 and the second controlled switch 122 can be thrown at the first moving end a1 as a normal default mode, that is, the default is that the batteries 11 are in a parallel structure.

[0041] As an implementation method, the control button is hidden inside the car starting power output port 13. When the plug of the emergency starting power is inserted into the car starting power output port 13, the plug presses against the control button to switch the series-parallel switching switch assembly 12 and the multiple batteries 11 from the default parallel structure to the series structure.

[0042] Of course, the control buttons may also be exposed on the surface of the housing 1 .

[0043] Further reading Figure 2 The mobile power supply also includes: a step-down circuit 16, connected between the multiple batteries 11 and the charge-discharge management circuit 15, for stepping down the total voltage of the multiple batteries 11 in series and providing it to the charge-discharge management circuit 15 when the multiple batteries 11 form a series structure, so that the charge-discharge management circuit 15 can charge the mobile terminal based on the stepped-down electric energy. In this case, it means that the emergency start function of the car can only be used in the series mode, while the power bank function can be used in both parallel and series modes, and the step-down degree of the step-down circuit 16 is different in different modes.

[0044] As another implementation method, the power bank function can also be set to be used only in parallel mode, such as Figure 4 As shown, the mobile power supply also includes: a resettable fuse 19, connected between the multiple batteries 11 and the charge and discharge management circuit 15, which is used to disconnect the multiple batteries 11 when the multiple batteries 11 form a series structure so that the circuit between the multiple batteries 11 and the charge and discharge management circuit 15 is disconnected, and self-recover when the multiple batteries 11 form a parallel structure so that a path is formed between the multiple batteries and the charge and discharge management circuit 15. In the series structure, the resettable fuse 19 is blown because the voltage rise exceeds the working range of the fuse, so that the power bank function cannot be realized.

[0045] Continue reading Figure 2 The mobile power supply also includes: an MCU 10 connected to the charge and discharge management circuit 15 and the step-down circuit 16, and used to control the operation of the charge and discharge management circuit 15 and the step-down circuit 16.

[0046] The mobile power supply also includes a camping lamp 17, which includes a white LED 171 and a yellow LED 172 connected to the MCU 10. The user can adjust the brightness of the white LED 171 and the yellow LED 172 separately, switch the brightness of the white and yellow LEDs at the same time, and control the yellow and white lights to light up simultaneously or separately, so as to adjust the color temperature.

[0047] The mobile power supply also includes a mosquito repellent lamp 18 connected to the MCU 10. The purpose of repelling mosquitoes is achieved through the corresponding light wavelength. Since turning on other light sources will affect the wavelength, the white light and yellow light of the camping lamp 17 need to be turned off when the mosquito repellent lamp 18 is turned on, that is, the white light LED and the yellow light LED cannot be turned on when the mosquito repellent lamp 18 is working.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile power source with both car emergency start function and power bank function, characterized in that: The invention comprises a housing and further comprises: Multiple batteries; A series-parallel switching switch assembly is connected between the plurality of batteries and is used for controlled switching of the connection mode with the plurality of batteries so that the plurality of batteries are switched between forming a series structure and forming a parallel structure; A car starting power output port, connected to the plurality of batteries, for outputting a voltage suitable for emergency starting of the car when the plurality of batteries form a series structure; Charging interface, used to charge the mobile terminal; A charge and discharge management circuit, connected to the multiple batteries and the charging interface, and configured to charge the mobile terminal using the electric energy of the multiple batteries when the multiple batteries form a parallel structure; The series-parallel switching switch assembly comprises: At least one first controlled switch is located between two adjacent batteries, with a fixed end connected to the positive electrode of the next battery, a first movable end connected to the positive electrode of the previous battery, and a second movable end connected to the negative electrode of the previous battery; At least one second controlled switch, located between two adjacent batteries, with a fixed end connected to the negative electrode of the next battery, a first movable end connected to the negative electrode of the previous battery, and a second movable end left vacant; When each of the first controlled switches is controlled so that the fixed end is connected to the first movable end, and each of the second controlled switches is controlled so that the fixed end is connected to the first movable end, the plurality of switches form a parallel structure; When each of the first controlled switches is controlled to connect the fixed end to the second movable end, and each of the second controlled switches is controlled to connect the fixed end to the second movable end, the plurality of switches form a series structure.

2. The mobile power source according to claim 1, characterized in that: The automobile starting power output port and the charging interface are exposed on the surface of the shell.

3. The mobile power source according to claim 2, characterized in that: The series-parallel switching switch assembly has a control button, and the control button is used to control the switching of the connection mode between the series-parallel switching switch assembly and the plurality of batteries; The control button is hidden inside the car starting power output port. When the plug of the emergency starting power supply is inserted into the car starting power output port, the plug presses against the control button to switch the series-parallel switching switch component and the multiple batteries from a default parallel structure to a series structure.

4. The mobile power source according to claim 2, characterized in that: The series-parallel switching switch assembly has a control button, and the control button is used to control the switching of the connection mode between the series-parallel switching switch assembly and the plurality of batteries; The control button is exposed on the surface of the shell.

5. The mobile power source as claimed in claim 2, characterized in that: The mobile power supply also includes: A step-down circuit is connected between the multiple batteries and the charge and discharge management circuit, and is used for, when the multiple batteries form a series structure, stepping down the total voltage of the multiple batteries in series and providing it to the charge and discharge management circuit, so that the charge and discharge management circuit can charge the mobile terminal based on the stepped-down electric energy.

6. The mobile power source as claimed in claim 2, characterized in that: The mobile power supply also includes: A resettable fuse is connected between the multiple batteries and the charge and discharge management circuit, and is used to disconnect the circuit between the multiple batteries and the charge and discharge management circuit when the multiple batteries form a series structure, and to self-recover when the multiple batteries form a parallel structure so that a path is formed between the multiple batteries and the charge and discharge management circuit.

7. The mobile power source according to claim 5, characterized in that: The mobile power supply also includes: The MCU is connected to the charge and discharge management circuit and the step-down circuit, and is used to control the operation of the charge and discharge management circuit and the step-down circuit.

8. The mobile power source according to claim 7, characterized in that: The mobile power supply also includes a camping light, and the camping light includes a white light LED and a yellow light LED connected to the MCU.

9. The mobile power source according to claim 7, characterized in that: The mobile power supply also includes a mosquito repellent lamp connected to the MCU.

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